Improvement in relieving steam-boilers of cinders



-UNITED STATES PATENT OFFICE.D

MA'IITHIAS SVANK, 0F PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN RELIEVING STEAM-BOILERS -OF CINDERS.

Specilication forming part of Letters Patent No. 35,845, dated July 8, 1862.

To @ZZ whom, it may concern:

Be it known that I, MATTHIAS SWANK, of

Philadelphia, in the State of Pennsylvania, have invented a new and improved arrangement whereby combnstionchambers are readily relieved of cinders or ashes; and I dohereby declare 'that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

Similar letters in the different views indicate like parts.

My invention relates to steam-boilers; and it consists in connecting the bottom of the interior of the combustion-chamber, or that part of the boiler between the tlue-sheet and furnace, with theonter shell of the boiler by means of tubes, which tubes are opened or closed at pleasure by a sliding valve on the exterior of the boiler, whereby the cinders and ashes that collect in the bottom of the combustionchamber are readily removed; and, I would here remark, the fresh air introduced in operating this valve assists and improves the combustion, although it is no feature of my invention. t

In order that those skilled in the art may make and use my invention, I shall proceed to describe its construction and operation.

Figure I represents a sectional elevation. Fig. II, a section through A B; Fig. III, a plan view, enlarged, of valve; and Fig. IV, asection of valve.-

In the different views, G represents the boiler; II, the furnace; C, the combustionchamber; D, the bridge-wall; F, the line-sheet, all of which parts may be constructed as desired and need no minute description here, since they form no part of my invention.

In Fig. I, (l represents the combustionchamber; K K K K, tubes passing through the waterspace E, surrounding the combustion-chamber (l, connecting the bottom of the interior Vof the combustion-chamber C with the exterior of the boiler G, the number and position of the tubes K K K K being governed by the size and construction of the boiler G, the object being, however, to place the said tubes in a position where the cinders and ashes lodge and collect in the chamber C. J represents a sliding valve acting upon the are attached or formed underneath; but, be-

ing below and out of the current or flow of water, mud and other deposits collect in and ill up the water-space surrounding this pit or ash-box, and in consequence thereof the said4 pit or ash-box burns out in a short time, and this difficulty, however, is avoided by my invention, wherein consists one of its advan tagese-viz., the tubes K K K K, passing through the water-space E, which is in the direct current or ilow of water and oft'ering so little obstruction to the water, and there consequently being no place for the mud or deposit to accumulate, there is nothing to obstruct the supply and immediate contact of water with the parts in contact with the ashes and cinders, and hence those parts can never burn. Besides obviating the above difenlty, the fresh air introduced by operating the sliding valve J assists combustion, and also blows out anything that may have lodged in the fines.

The operation is quite simple. The engineer at pleasure, whether in motion or not, as in the case of a locomotive-boiler, by the lever L operates the sliding valve J, (Fig. III4 showing the valve Vopen,) when the cinders or bastion by v the introduction of fresh air, as lieve combustion-chambers of steam`boilers,0r these features are described in patents granted that part of the boiler between the furnace to Peter Cooper, October 13, 1831; F. l). Dimpand ue-sheet,ofashes or oinders, substantially Y fel, November 30, 1858, and to James E. 'Moas represented, and operated for the purpose Connel for additional improvements, October set forth.

6, 1857; ybut MATTHAS SVANK.

What I consider novel, claim, and desire to Witnesses;

secure by Letters Patent, is Y O. J NORRIS,

The eombinatien and arrangement to revY CHAS. E. PANCOASCik 

